Boron-vertex modification of carba-closo-dodecaborate for high-performance magnesium-ion battery electrolyte
| Autor: | Junichiro Kanazawa, Yuu Inatomi, Takumi Shimokawa, Kensuke Nakura, Masanobu Uchiyama, Mamoru Watanabe, Mitsuhiro Hibino, Yu Kitazawa, Kazunori Miyamoto, Tomofumi Hamamura |
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| Rok vydání: | 2021 |
| Předmět: |
Materials science
010405 organic chemistry Magnesium Dodecaborate Inorganic chemistry chemistry.chemical_element Electrolyte Overpotential 010402 general chemistry 01 natural sciences 0104 chemical sciences chemistry Chemistry (miscellaneous) Ionic conductivity General Materials Science Solubility Boron Magnesium ion |
| Zdroj: | Materials Advances. 2:937-941 |
| ISSN: | 2633-5409 |
| Popis: | Further advances in magnesium ion batteries (MIBs) require the development of electrolyte solutions with highly optimized properties. Here we report the design, synthesis and electrolytic properties of a new family of Mg salts of carba-closo-dodecaborate anions (CCAs). Detailed calculations suggested that modification at the boron vertices, previously considered inappropriate for MIB electrolytes, would be effective. Experimental studies showed that simple halogenation at the 12-B vertex of CCA drastically improves the solubility in low viscosity solvents without compromising the chemical and redox stability, and the ionic conductivity reached 6.2 mS/cm. The synthesized electrolytes showed low overpotential (≤200 mV) for Mg deposition and excellent reversible magnesium deposition/stripping with high Coulombic efficiency (≥95%). |
| Databáze: | OpenAIRE |
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